127220780 has 12 divisors (see below), whose sum is σ = 267163680. Its totient is φ = 50888304.

The previous prime is 127220777. The next prime is 127220791. The reversal of 127220780 is 87022721.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3180500 + ... + 3180539.

It is an arithmetic number, because the mean of its divisors is an integer number (22263640).

Almost surely, 2^127220780 is an apocalyptic number.

127220780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127220780 is an abundant number, since it is smaller than the sum of its proper divisors (139942900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

127220780 is a wasteful number, since it uses less digits than its factorization.

127220780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361048 (or 6361046 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 127220780 is about 11279.2189445901. The cubic root of 127220780 is about 502.9436755385.

The spelling of 127220780 in words is "one hundred twenty-seven million, two hundred twenty thousand, seven hundred eighty".